After he witnessed Aurek Team's death at the hands of Darth Sidious, and combined with his own sudden reversal of loyalties, the spared TC-16 apparently suffered the droid equivalent of a mental breakdown. In a discussion with C-3PO, he predicted the coming dark times and that the line between good and evil would become blurred. He then advised C-3PO to accept a mind wipe if ever offered, as the alternative would be permanent fear and confusion.

TC's posture was slouched due to a damaged pelvic joint, and he suffered from circuitry corrosion.